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Paper Information

Title: 

APPLYING THE RELIABILITY ANALYSIS CONCEPT IN ON-BOTTOM STABILITY DESIGN OF SUBMARINE PIPELINES

Type: PAPER
Author(s): DAGHIGH M.,ALAGHEBAND S.,TAHMASBI ASHTIANI H.
 
 
 
Name of Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Type of Seminar:  CONFERENCE
Sponsor:  PORTS AND MARITIME ORGANIZATION
Date:  2008Volume 8
 
 
Abstract: 

THIS PAPER DESCRIBES A RELIABILITY BASED FORMULATION TO DETERMINE SUBMARINE PIPELINE ON-BOTTOM STABILITY FOR CONVENTIONAL, CONCRETE COATED PIPELINE SYSTEM USED FOR TRANSMISSION OF GAS AND CONDENSATE IN SOUTH PARS FIELD OF PERSIAN GULF. THE INSTABILITY IS DEFINED AS A CONDITION WHERE THE WATER WILL PUSH THE PIPELINE BUT THE MOVEMENT WILL NOT NECESSARILY CAUSE A FAILURE. THE STABILITY CONDITIONS ARE USUALLY CHECKED DURING INSTALLATION AND OPERATING CONDITIONS. THE SUBMARINE PIPELINE ON-BOTTOM STABILITY DESIGN IS CARRIED OUT FOR DIFFERENT WATER DEPTH AND ENVIRONMENTAL CONDITIONS. MOREOVER THE EFFECT OF EMBEDMENT OF THE PIPELINE ON THE SEABED IN CONSIDERED WITH REDUCED HYDRODYNAMIC COEFFICIENTS AS DETAILED IN THE LITERATURE. THE EVALUATION OF RELIABILITY REQUIRES AN UNDERSTANDING OF DESIGN METHODOLOGIES AND WHAT DESIGN PARAMETERS CAN CAUSE AND INCREASE UNRELIABILITY IN A DESIGNED SYSTEM. THE ON-BOTTOM STABILITY LIMIT STATE FORMULATION IS BASED ON DNV-RP-E305 RECOMMENDED PRACTICE WHICH IS WIDELY USED IN ENGINEERING ANALYSIS IN SUBMARINE PIPELINE INDUSTRIES.

 
Keyword(s): SUBSEA PIPELINE, RELIABILITY ANALYSIS, ON-BOTTOM STABILITY
 
 
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